WO2013054693A1 - Dispositif d'éclairage - Google Patents

Dispositif d'éclairage Download PDF

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Publication number
WO2013054693A1
WO2013054693A1 PCT/JP2012/075487 JP2012075487W WO2013054693A1 WO 2013054693 A1 WO2013054693 A1 WO 2013054693A1 JP 2012075487 W JP2012075487 W JP 2012075487W WO 2013054693 A1 WO2013054693 A1 WO 2013054693A1
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WO
WIPO (PCT)
Prior art keywords
light
emitting element
light emitting
irradiation region
lighting device
Prior art date
Application number
PCT/JP2012/075487
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English (en)
Japanese (ja)
Inventor
渡辺　昌規
Original Assignee
シャープ株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by シャープ株式会社 filed Critical シャープ株式会社
Priority to US14/350,556 priority Critical patent/US20140268735A1/en
Publication of WO2013054693A1 publication Critical patent/WO2013054693A1/fr

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V11/00—Screens not covered by groups F21V1/00, F21V3/00, F21V7/00 or F21V9/00
    • F21V11/16—Screens not covered by groups F21V1/00, F21V3/00, F21V7/00 or F21V9/00 using sheets without apertures, e.g. fixed
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21K—NON-ELECTRIC LIGHT SOURCES USING LUMINESCENCE; LIGHT SOURCES USING ELECTROCHEMILUMINESCENCE; LIGHT SOURCES USING CHARGES OF COMBUSTIBLE MATERIAL; LIGHT SOURCES USING SEMICONDUCTOR DEVICES AS LIGHT-GENERATING ELEMENTS; LIGHT SOURCES NOT OTHERWISE PROVIDED FOR
    • F21K9/00—Light sources using semiconductor devices as light-generating elements, e.g. using light-emitting diodes [LED] or lasers
    • F21K9/20—Light sources comprising attachment means
    • F21K9/23—Retrofit light sources for lighting devices with a single fitting for each light source, e.g. for substitution of incandescent lamps with bayonet or threaded fittings
    • F21K9/232—Retrofit light sources for lighting devices with a single fitting for each light source, e.g. for substitution of incandescent lamps with bayonet or threaded fittings specially adapted for generating an essentially omnidirectional light distribution, e.g. with a glass bulb
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21K—NON-ELECTRIC LIGHT SOURCES USING LUMINESCENCE; LIGHT SOURCES USING ELECTROCHEMILUMINESCENCE; LIGHT SOURCES USING CHARGES OF COMBUSTIBLE MATERIAL; LIGHT SOURCES USING SEMICONDUCTOR DEVICES AS LIGHT-GENERATING ELEMENTS; LIGHT SOURCES NOT OTHERWISE PROVIDED FOR
    • F21K9/00—Light sources using semiconductor devices as light-generating elements, e.g. using light-emitting diodes [LED] or lasers
    • F21K9/60—Optical arrangements integrated in the light source, e.g. for improving the colour rendering index or the light extraction
    • F21K9/61—Optical arrangements integrated in the light source, e.g. for improving the colour rendering index or the light extraction using light guides
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V7/00—Reflectors for light sources
    • F21V7/04—Optical design
    • F21V7/041—Optical design with conical or pyramidal surface
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
    • F21Y2107/00—Light sources with three-dimensionally disposed light-generating elements
    • F21Y2107/10—Light sources with three-dimensionally disposed light-generating elements on concave supports or substrates, e.g. on the inner side of bowl-shaped supports
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
    • F21Y2115/00—Light-generating elements of semiconductor light sources
    • F21Y2115/10—Light-emitting diodes [LED]

Definitions

  • the present invention relates to a lighting device, for example, a lighting device that performs a blinking operation for insect control in plant cultivation or the like.
  • night moths such as the Tobacco moth and Spodoptera litura eat the flowers.
  • many of the night moths have acquired drug resistance against many types of insecticides, making it difficult to control with insecticides.
  • a yellow illuminating device for moth irradiating adults flying to the field for spawning with light that has an effect of suppressing the spawning of the adults.
  • the yellow illuminating device for fenders is being used in particular for carnations and roses because the growth and flowering are not adversely affected by the light of fluorescent lamps.
  • Examples of the yellow proofing device for fendering include a lighting device using a yellow fluorescent lamp that emits yellow light having a peak wavelength of 560 nm to 580 nm (see Patent Document 1), and a lighting device using a yellow light emitting diode (yellow LED) (for example, Patent Document 2).
  • a configuration for flashing irradiation light is disclosed (for example, see Patent Document 3).
  • Patent Document 5 describes a downlight type LED lighting device used by being embedded in a ceiling or the like.
  • Patent Document 6 describes a pseudo-rotation warning lamp that includes a plurality of LED light sources and a light source circuit, and that does not require a rotation drive mechanism by sequentially controlling the current flowing through each LED light source.
  • Patent Document 7 describes a surface-mount LED in which a lens having a mortar-shaped concave portion and an LED chip are integrated to have a wide light distribution characteristic.
  • Patent Document 8 describes an LED light bulb that includes a single LED module and a lens having a concave portion to widen the light distribution range.
  • the irradiation light in the yellow illuminating device for fenders, it is desirable to blink the irradiation light in order to enhance the fender effect.
  • the irradiation light when the irradiation light is blinked, the blinking light has the property of attracting and stimulating the attention of a person outside the field (neighboring residents). For this reason, there was a problem that when the irradiation light is blinked, there is a possibility of discomfort to neighboring residents living near the farm field.
  • the light emitted from the light source is also used in lighting devices such as street lights that emit continuous light that is not flashing light, light sources for adjusting the flowering of short-day plants for agriculture, and lighting devices that have a spectrum suitable for a specific purpose such as red or blue.
  • lighting devices such as street lights that emit continuous light that is not flashing light, light sources for adjusting the flowering of short-day plants for agriculture, and lighting devices that have a spectrum suitable for a specific purpose such as red or blue.
  • the color and spectrum of the plant may cause discomfort or adverse effects on neighboring residents living near the field.
  • an illumination device such as a street lamp that emits continuous light that is not flashing light
  • the visibility from a distance is deteriorated, for example, it becomes difficult to see stars in the night sky. Even in such a case, it is desired to further improve the visibility.
  • the present invention has been made in view of the above problems, and an object of the present invention is to provide an illuminating device capable of reducing the influence on lighting surroundings that may cause discomfort or adverse effects such as blinking. It is in.
  • an illumination device includes a first light emitting element, a light blocking unit, and a first optical path conversion member, and provides light to a first irradiation region and a second irradiation region different from the first irradiation region.
  • the first light-emitting element can emit flashing light that irradiates the first irradiation region, and the light-shielding portion includes the light emitted from the first light-emitting element.
  • the intensity difference between light and dark is smaller than the flashing light of the first light emitting element.
  • the first feature is that the optical path of the light emitted from the first light emitting element is converted so that the second irradiation region is irradiated with perceived light.
  • an illumination device includes a first light emitting element, a second light emitting element, and a light shielding portion, and emits light to a first irradiation area and a second irradiation area different from the first irradiation area.
  • An illumination device capable of irradiating wherein the first light emitting element is capable of emitting flashing light reaching the first irradiation region, and the light-shielding portion is the first light among the light emitted by the first light emitting element.
  • the second feature is to irradiate the second irradiation region.
  • the light that irradiates the second irradiation region is light that a person in the second irradiation region perceives as continuous light.
  • the illumination device having any one of the above characteristics includes a first optical path conversion member that converts an optical path of incident light to irradiate the second irradiation region, and the first optical path conversion member includes the light shielding unit. It is provided outside the internal space surrounded by.
  • the lighting device having any one of the above characteristics includes a plurality of the first light emitting elements, and each of the total dark periods in which all of the first light emitting elements are in a dark state is set to be shorter than a time perceivable by humans. .
  • the illuminating device having the above characteristics includes a plurality of the first light emitting elements, of which the first light emitting element is in a bright state and the first light emitting element is in a dark state.
  • the light / dark pattern rotates over time.
  • the light-shielding portion includes a side light-shielding portion that shields light traveling from the first light-emitting element to the second irradiation region without changing an optical path,
  • An upper light shielding portion is provided to cover an upper portion of the side light shielding portion.
  • the illumination device having any one of the above characteristics includes a plurality of the first light emitting elements, and among them, the position of the first light emitting element in the bright state and the position of the first light emitting element in the dark state.
  • the first light / dark pattern defined in (2) and the second light / dark pattern, which is an inverted pattern of the first light / dark pattern, are alternately set in time.
  • the second light emitting element emits continuous light.
  • the second light emitting element is a phosphor that emits visible light, and further, the second light emitting element is excited by light emitted from the first light emitting element. Phosphor that emits light.
  • the second light emitting element is arranged in the second irradiation region according to a light emission intensity of the first light emitting element as viewed from a person in the second irradiation region.
  • the light is emitted so that the intensity of the entire light directly or indirectly irradiated is within a predetermined light intensity range when viewed from the person in the second irradiation region.
  • the illumination device having any one of the above characteristics includes a second optical path conversion member that bends the optical axis of the first light emitting element in a direction toward the first irradiation region.
  • the illumination device of any one of the above features includes a central axis, the first irradiation region includes a lower portion of the central axis, and the second irradiation region is relative to the central axis of the illumination device. Includes orthogonal directions.
  • the direction of light passing through the boundary between the first irradiation region and the external region in the light emission of the first light emitting element is an outer boundary direction
  • the illumination device The angle of the outer boundary direction with respect to the central axis is 45 degrees or more and 85 degrees or less.
  • the direction of light passing through the boundary between the first irradiation region and the external region in the light emission of the first light emitting element is defined as the outer boundary direction.
  • the direction of the light having the maximum intensity is set as a reference direction, and the angle of the reference direction with respect to the outer boundary direction is from 20 degrees inside the first irradiation region to the outside 30 of the first irradiation region. It is set to a range of degrees.
  • the first light emitting element is a yellow component having a peak wavelength of 540 nm or more and 620 nm or less and does not emit light of a blue component having a wavelength of 400 to 500 nm, or A blue component having a wavelength of 400 to 500 nm emits light having an emission intensity that does not attract insects.
  • the light period and dark period of the flashing light are 10 ms or more and 1000 ms or less.
  • an illumination device includes a first light emitting element, a second light emitting element, and a light shielding portion, and emits light to a first irradiation area and a second irradiation area different from the first irradiation area.
  • a lighting device capable of emitting light wherein the first light emitting element can emit main light that irradiates the first irradiation region, and the second light emitting element irradiates the second irradiation region.
  • Auxiliary light having a different spectrum can be emitted, and the light-shielding unit shields light directed to a region other than the first irradiation region from light emitted from the first light-emitting device, and emits light from the second light-emitting device.
  • the third feature is that the second irradiation region is irradiated with the light, and the second irradiation region includes a direction orthogonal to the axis of the illumination device.
  • the lighting device having the first feature only the first irradiation area is irradiated with the blinking light that is the main light, and the second irradiation area where the person is present has a lighter / darker intensity difference than the blinking light that is the auxiliary light.
  • Light that is perceived to be small for example, continuous light
  • the person in the second irradiation region maintains the anti-fouling effect by the flashing light. Discomfort to people due to flashing light can be reduced.
  • the person in the second irradiation area has a lighter / darker intensity difference than the flashing light reaching the second irradiation area. Since light (for example, continuous light) that is perceived to be small is mainly observed, discomfort can be reduced compared to the case of only blinking light.
  • the illumination device having the second feature only the first irradiation region is irradiated with the blinking light that is the main light, and the second irradiation region where the person is present has an intensity difference that is brighter and darker than the blinking light that is the auxiliary light.
  • Light that is perceived to be small for example, continuous light
  • the person in the second irradiation area recognizes the light of the illumination device having the above characteristics as light having a smaller intensity difference between light and dark than the flashing light. , Can reduce discomfort caused by flashing light.
  • the person in the second irradiation area is perceived as having a smaller intensity difference than the flashing light reaching the second irradiation area. Since light (for example, continuous light) is mainly observed, discomfort can be reduced as compared with the case of only blinking light.
  • main light is irradiated only to the first irradiation region
  • auxiliary light is irradiated to the second irradiation region where a person is present.
  • the influence of the main light on the person far away can be reduced by making the auxiliary light have a property (spectrum) preferable to the person far away compared to the main light.
  • FIG. 1 is a schematic external view, a schematic cross-sectional view, and a schematic bottom view illustrating a schematic configuration example in a first embodiment of a lighting device according to the present invention. It is a graph which shows the spectrum of the 1st light emitting element which comprises the illuminating device which concerns on this invention. It is a schematic diagram which shows the positional relationship of this light-emitting device and a person in 1st Embodiment of the illuminating device which concerns on this invention. It is a schematic diagram which shows the time change of the partial irradiation area
  • FIG. 4 is a graph showing temporal changes in light emission of the first light emitting element and the second light emitting element in the illumination device according to the present invention.
  • It is the schematic perspective view and schematic bottom view which show the example of a schematic structure in 6th Embodiment of the illuminating device which concerns on this invention (structure in internal space except a window part and the light-scattering member).
  • It is a schematic diagram which shows the time change of the partial irradiation area
  • It is a schematic sectional drawing which shows arrangement
  • the lighting device 1A is assumed to be a light-proofing lighting device for the purpose of preventing insects such as night owls that eat flowers.
  • the lighting device 1A has an axially symmetric shape
  • the X axis is set in the direction of the central axis ⁇ of the lighting device 1A
  • the Y axis and the Z axis are set in directions orthogonal thereto.
  • the Y axis and the Z axis are orthogonal.
  • the center axis ⁇ is described as the direction of gravity, but the present invention is not limited to this.
  • the shape of the lighting device 1A is not necessarily an axially symmetric shape.
  • FIG. 1A is a schematic external view showing the external appearance of the lighting device 1A, and FIG.
  • FIG. 1B is a schematic cross-sectional view showing a cross section including the central axis ⁇ of the lighting device 1A, and FIG. These are the schematic bottom views seen from the downward direction of central axis (alpha) of 1 A of illuminating devices.
  • the 1st light emitting element 11 can irradiate the main light which is flashing light to the 1st irradiation area containing the part extended below the central axis (alpha), and the 1st irradiation area Unlike the lighting device 1A, the second irradiation region including the direction orthogonal to the central axis ⁇ can be irradiated with auxiliary light that can be recognized as continuous light by a person.
  • the lighting device 1 ⁇ / b> A is an LED bulb-type lighting device, which irradiates a plug 3, an outer wall member 2, a drive circuit 4 disposed in the outer wall member 2, and flashing light.
  • a light scattering portion 17 that is a first light path conversion member that converts a part of the light path of the light emitted from the first light emitting element 11, and the second irradiation region from the first light emitting element 11 through the light scattering portion 17. It is configured to irradiate the second irradiation area with auxiliary light perceived as continuous light by a person in the area.
  • the light-shielding part 12 makes the light which goes directly to area
  • the first irradiation area is set to an insect repellent area, for example, a cultivation area such as carnation or rose, when used (in this case, the same as when installed).
  • a cultivation area such as carnation or rose
  • the entire first cultivation area is the first irradiation area of any one of the lighting apparatuses 1A. Set the irradiation area.
  • the second irradiation area is set including a direction orthogonal to the central axis of the light emitting device, and is a direction in which people such as neighboring residents are present when the normal lighting device 1A is used.
  • the plug 3 is connected to a commercial AC power supply (AC 100 V to 230 V, 50 Hz or 60 Hz) and supplies power to the drive circuit 4.
  • the plug 3 may be configured to be connectable to a DC power source or a pulse power source. In this case, the power source circuit 4b in the drive circuit 4 may not be provided.
  • the outer wall member 2 is configured by a cylindrical member that spreads downward so as to be axially symmetric with respect to the central axis ⁇ , and the cylindrical member corresponds to the first light emitting element 11. It is comprised with the material provided with the function to dissipate the heat which generate
  • a plug 3 is provided at the upper end of the cylindrical member, and a drive circuit 4 is provided in the internal space of the central portion of the cylindrical member.
  • the external dimension L of the lower end part of the cylindrical member which comprises the said outer wall member 2 is 58 mm, for example.
  • the shape of the outer wall member 2 is not cylindrical, but may be a side surface of a prism or a frustum, or may be another shape.
  • the lighting apparatus 1A will be described assuming that the central axis ⁇ is installed in parallel with the vertical direction (the direction of gravity) in use, but the central axis ⁇ is not necessarily in the vertical direction.
  • the installation position and angle may be different between when used and when not used.
  • the drive circuit 4 includes a blinking circuit 4 a that controls the blinking operation of the first light emitting element 11 and a power supply circuit 4 b that supplies a predetermined power to the first light emitting element 11.
  • the flashing circuit 4a and the power supply circuit 4b are not necessarily configured on the same substrate as the drive circuit 4, and may be configured on different substrates. Only a part may be provided inside the outer wall member 2.
  • the present embodiment includes eight first light emitting elements 11a to 11h, a printed circuit board 15 on which the first light emitting elements 11 are mounted, and a light shielding portion 12. ing.
  • the light shielding portion 12 includes a side light shielding portion 13 formed of a side surface of a truncated cone and an upper light shielding portion 14 formed of a top surface of the truncated cone.
  • the side light shielding unit 13 limits the irradiation direction so that the blinking light emitted from the first light emitting element 11 does not reach the person far away from the lighting device 1A, and the main light (flashing light) is at least It has a function of shielding light so that it is not emitted in a direction orthogonal to the central axis ⁇ .
  • the inside of the light shielding part 12 is a mirror surface or a white reflecting surface.
  • a part or all of the surface may be a black surface or the like that does not generate reflected light and scattered light.
  • the central axis of the light shielding part 12 overlaps with the central axis ⁇ of the outer wall member 2, the upper light shielding part 14 is located on the drive circuit 4 side, and the opening of the light shielding part 12 is on the drive circuit 4 side.
  • the light-shielding part 32 is installed in contact with the opening of the outer wall member 2 so as to be located on the opposite side.
  • the printed circuit board 15 is a flexible substrate, is a truncated cone-shaped internal space surrounded by the light shielding part 12, and is provided in the side light shielding part 13 along the edge of the side light shielding part 13.
  • the first light emitting elements 11 are annularly arranged on the flexible substrate at equal intervals.
  • the first light emitting element 11 is a surface-mounted LED suitable for illumination that has good heat dissipation and requires high luminance, and is configured using a blue LED element and a yellow phosphor. And emits light of color coordinates (0.42, 0.48).
  • FIG. 2 shows a spectrum of the first light emitting element 11 in the present embodiment. As shown in FIG. 2, the peak wavelength of the first light emitting element 11 is set to 565 nm. In addition, the blue component having a wavelength of 400 to 500 nm attracting insects such as moths is reduced.
  • the composition has a large amount of yellow components having a wavelength of 565 nm to 590 nm, which are repelled by insects such as moths, or whose behavior (mating) is suppressed, and a high antifungal effect can be obtained.
  • that there are few blue components means that the emitted light intensity of a blue component is so small that an insect attracting effect can be disregarded.
  • the peak wavelength was set to 565 nm, it is preferable that it is 540 nm or more and 620 nm or less, and it is still more preferable if it is 565 nm or more and 590 nm or less.
  • the first irradiation area is irradiated with light having an antifungal effect using a normal white LED or light bulb color LED instead of a yellow LED and a filter that does not transmit or hardly transmit a blue component that attracts insects. You may make it.
  • light bulb color LED has few blue components, a filter is not necessarily required.
  • a bullet type LED having a narrow half angle width of radiation angle and strong directivity of light may be used. Since the bullet-type LED has strong directivity, it becomes easy to illuminate a specific area, and the optical design of the light emitting device becomes easy.
  • FIG. 3 shows the positions of the illuminating device 1A, the partial irradiation areas AS11 and AS15, and the person H in the distance when the illuminating device 1A is installed, that is, when the central axis ⁇ of the outer wall member 2 is parallel to the vertical direction X. It shows the relationship.
  • the partial irradiation area AS11 is an area where the light emitted from the first light emitting element 11a is directly irradiated without passing through the light scattering section 14, and the partial irradiation area AS15 is the light emitted from the first light emitting element 11e. Each of the areas directly irradiated without going through the line is shown.
  • the lighting device 1 ⁇ / b> A is visually recognized from a person H whose center axis ⁇ is parallel to the vertical direction X and scattered by the light scattering portion 14 that is the first optical path conversion member. It is installed as follows.
  • the first light emitting element 11a will be described for the sake of explanation, the other first light emitting elements 11b to 11h have the same configuration.
  • the direction of light passing through the boundary between the first irradiation region and the external region in the irradiation light of the first light emitting element 11 is the outer boundary direction ⁇
  • the optical axis of the first light emitting element 11 (in this case)
  • the direction in which the intensity is maximum) is the reference direction ⁇
  • the angle between the central axis ⁇ and the outer boundary direction ⁇ is ⁇ 1
  • the angle between the central axis ⁇ and the reference direction ⁇ is ⁇ 2 .
  • ⁇ 1 is an angle at which a distant person H at a position substantially orthogonal to the central axis ⁇ of the lighting device 1A cannot directly see the main light emitted from the first light emitting element 11, and is the size of the first irradiation region. Set to an angle that can ensure this. In order to ensure the size of the first irradiation region, it is preferable to set it to 45 degrees or more. Therefore, ⁇ 1 is preferably set to 45 degrees or more and 85 degrees or less. Note that ⁇ 1 is more preferably 60 degrees or more and 80 degrees or less. In the present embodiment, by setting the theta 1 to 75 degrees. Note that the setting angle of ⁇ 1 is appropriately set according to the installation angle of the present embodiment and the light component of the first light emitting element 11 (the magnitude of scattered light, etc.).
  • the main light from the two first light-emitting elements 11 is irradiated on the region immediately below the lighting device 1 ⁇ / b> A in use (the overlapping region of AS 11 and AS 15). Only main light from the first light emitting elements 11 is irradiated. For this reason, it is possible to reduce unevenness of the intensity of the irradiation light in the first irradiation region by increasing the intensity of the light irradiated to the region near the outer region of the first irradiation region.
  • the set value of the angle ( ⁇ 2 ⁇ 1 ) is appropriately set according to the installation angle of the lighting device 1A and the light component of the first light emitting element 11 (the magnitude of scattered light, etc.).
  • the light from the first light-emitting element 11 is blocked by the light blocking portion 12 and cannot be directly viewed, but the light reflected by the ground or the plant may be visible.
  • the illuminating device 1A by providing the light scattering portion which is the first light path conversion member, the person H in the second irradiation region can be more attracted to the auxiliary light from the light scattering portion. The effect of the light reflected by is reduced.
  • the auxiliary light is configured to include a light scattering member 17 that is a first optical path conversion member that directs a part of the light emitted from the first light emitting element 11 in the direction of the second irradiation region.
  • the light scattering member 17 is installed at the center of the window portion 16 formed of a flat transparent member covering the bottom surface of the internal space of the portion 12, and outside (lower side) of the frustoconical internal space surrounded by the light shielding portion 12. ing.
  • the light shielding part 12 is sealed by the window part 16 to protect the first light emitting element 11 from rain or the like.
  • the window portion 16 is provided and the light scattering member 17 is provided at the center of the window portion 16.
  • the present invention is not limited to this.
  • the window 16 is not necessarily provided, and the light scattering member 17 may be provided outside the internal space, and may be provided at a place other than the window 16.
  • the light scattering member 17 scatters the direction of light incident on the light scattering member 17 so as to include light having an angle with respect to the central axis ⁇ in the range of 85 degrees to 90 degrees.
  • the light scattering member 17 is made of transparent resin, glass having a roughened surface, white resin such as silicon resin or fluorine resin, white sponge, or white ceramic such as alumina. Further, the light scattering member 17 is arranged at a position that is equidistant from all the first light emitting elements 11a to 11h. Therefore, when viewed from a person H shown in FIG. 3 to be described later, the intensity of the light emitted from the light scattering portion is substantially the same regardless of which of the first light emitting elements 11a to 11h is lit.
  • the dark state does not necessarily need to be a light-off state in which the first light emitting element 11 does not emit light, and it is sufficient that there is a difference in intensity between the light intensity in the bright state and the light intensity in the dark state.
  • the blinking circuit 4a of the drive circuit 4 is defined by the position of the first light emitting element 11 in the bright state and the position of the first light emitting element 11 in the dark state among the plurality of first light emitting elements 11.
  • the drive control is performed so that the bright and dark pattern rotates with time (illumination with pseudo-rotating light).
  • FIGS. 4 and 5 a light / dark pattern in which two first light emitting elements 11 at symmetrical positions are in a bright state and the other first light emitting elements 11 are in a dark state is shown in FIG. Rotate clockwise in 1 (c).
  • the moving direction may be the reverse direction.
  • the influence of shadows on the light scattering member 17 is suppressed, and flickering of light reflected / scattered from the first irradiation region is further increased. It becomes possible to suppress.
  • the intervals Tb for switching the temporal change of the light / dark pattern are set to 20 ms, respectively.
  • each first light emitting element 11 enters a bright state every 80 ms (the blinking cycle is 80 ms).
  • the period Tb is 2 ms or more and 4000 ms or less, more preferably 8 ms or more and 2000 ms or less, more preferably 15 ms or more and 1000 ms or less, and more preferably 30 ms or more and 200 ms. Most preferably.
  • the first light emitting element 11a and the first light emitting element 11e are in a bright state, and as shown in FIG. 4, the flashing light is irradiated to the partial irradiation areas AS11 and AS15.
  • the first light emitting element 11c and the first light emitting element 11g are in a bright state, and the flashing light is irradiated to the partial irradiation areas AS13 and AS17.
  • the first light emitting element 11d and the first light emitting element 11h are in a bright state, and the flashing light is irradiated to the partial irradiation areas AS14 and AS18.
  • the partial irradiation area appears to rotate clockwise on the first irradiation area.
  • any one of the first light emitting elements 11 in the usage state, any one of the first light emitting elements 11 is always in the bright state, and the entire dark period in which all of the first light emitting elements 11 are in the dark state. There is no configuration (configuration in which the total dark period is 0).
  • the light scattering member 17 since a part of the light of the first light emitting element 11 is scattered by the scattering member and used as auxiliary light, the light scattering member 17 is always illuminated, and the person H shown in FIG. The light from the scattering member 17 can be perceived as continuous light or light having a smaller intensity difference between light and dark than the blinking light of each first light emitting element 11.
  • the person H can be perceived as continuous light if it is set to be shorter than the perceptible time.
  • a normal person can perceive as continuous light if the total dark period is 10 ms or less, and even a highly sensitive person can perceive it as continuous light if the total dark period is 5 ms or less.
  • a total dark period of 5 ms or less may occur.
  • the arrangement of the illumination device 1A is set so that the first irradiation areas of the illumination devices 1A do not overlap as much as possible. However, when the first irradiation regions overlap, the state of the first light emitting element (light state or dark state) that irradiates the overlapping region of the first irradiation regions is configured to be the same in the two illumination devices 1A. For example, it is considered that the blinking effect is not reduced even if the first irradiation areas overlap.
  • the light from the light scattering member 17 is not limited to continuous light, and may be light that has a smaller intensity difference between light and darkness perceived by humans than the flashing light of each first light emitting element 11.
  • Second Embodiment A second embodiment of the lighting device according to the present invention will be described with reference to FIG.
  • an anti-lighting illumination device is assumed as in the first embodiment.
  • the direction of light that is directed to a direction other than the first irradiation region in the light emitted from the first light emitting element 21 is defined as the first irradiation region.
  • the case where the prism 26 which is the 2nd optical path conversion member bent to the direction to go is provided is demonstrated.
  • FIG. 6 for the sake of explanation, as in FIG. 1, the X axis is set in the direction of the central axis ⁇ of the light emitting device 1B, and the Y axis and the Z axis are set to be orthogonal thereto.
  • FIG. 6 shows a cross section including the central axis ⁇ of the illumination device 1B in the present embodiment.
  • the direction of the central axis ⁇ is described as being the direction of gravity, but is not limited to this.
  • the illuminating device 1B includes a plurality of first light emitting elements 21 and can irradiate main light onto a first irradiation region including a portion extending downward from the central axis ⁇ .
  • An LED bulb-type illumination device configured to be able to irradiate auxiliary light to a second irradiation region including a direction orthogonal to the central axis ⁇ via a light scattering member 17 that is a first optical path conversion member.
  • a member 2 and a drive circuit 4 are provided.
  • the configurations of the plug 3, the outer wall member 2, and the drive circuit 4 are the same as those in the first embodiment.
  • the setting of the first irradiation area and the second irradiation area is also the same as in the first embodiment.
  • each of the eight first light emitting elements 21a to 21h, the printed circuit board 25 on which the first light emitting element 21 is mounted, and the first light emitting element 21 are provided.
  • a prism 25 and a light shielding portion 22 provided in correspondence are provided.
  • the first light emitting element 21 performs the light emitting operation in the first embodiment.
  • the light-shielding portion 22 includes a side light-shielding portion 23 made of a side surface of a cylinder and an upper light-shielding shape made of a top surface of the cylinder on the inner peripheral surface facing the internal space.
  • the unit 24 is provided.
  • the inside of the light shielding unit 22 is configured not to generate reflected light and scattered light.
  • the inner side of the upper light shielding part 24 may be configured to generate reflected light and scattered light.
  • the central axis of the light shielding part 22 overlaps with the central axis ⁇ of the outer wall member 2, the upper light shielding part 24 is located on the drive circuit 4 side, and the opening of the light shielding part 22 is on the drive circuit 4 side.
  • the light shielding portion 22 is disposed in contact with the opening of the outer wall member 2 so as to be located on the opposite side of the outer wall member 2.
  • the printed circuit board 25 is a flexible circuit board, and is provided along the edge of the side light-shielding part 23 in the cylindrical internal space surrounded by the light-shielding part 22.
  • the first light-emitting element 21 is a surface-mounted LED that emits light having the spectrum shown in FIG. 2 as in the first embodiment, and is arranged on the flexible substrate 25 in an annular manner at equal intervals.
  • a prism 26 as a second optical path changing member is provided in the vicinity of the first light emitting element 21 so that light emitted from the first light emitting element 21 is directed into the first irradiation region by the corresponding prism 26.
  • the installation position and installation angle of the prism 26 are set.
  • the angle ⁇ 3 between the optical axis ⁇ of the light after reaching the prism 26 and the central axis ⁇ is set to 70 degrees, for example.
  • the angle ⁇ 3 is set to 45 degrees or more and 85 degrees or less so that a person cannot visually recognize the first light emitting element 21 and can secure the size of the first irradiation region.
  • the prism 26 is provided for each first light emitting element 21 .
  • the present invention is not limited to this.
  • one donut-shaped prism 26 may be provided in common for all the first light emitting elements 21.
  • the prism 26 is provided to be supported by the light shielding unit 22 in the present embodiment, it may be installed on the window unit 16.
  • the light emitting device 1B is a light scattering member that scatters a part of the light emitted by the first light emitting element 21 in the direction of the second irradiation area, as in the first embodiment. 17.
  • the light scattering member 17, which is the first optical path conversion member, is a frustoconical internal space surrounded by the light shielding portion 12, the center of the window portion 16 formed of a flat transparent member that covers the bottom surface of the internal space of the light shielding portion 12. It is installed outside (lower side).
  • the light shielding part 22 is sealed by the window part 16 to protect the first light emitting element 21 from rain or the like.
  • the window portion 16 is provided and the light scattering member 17 is provided at the center of the window portion 16.
  • the present invention is not limited to this.
  • the window 16 is not necessarily provided, and the light scattering member 17 may be provided outside the internal space, and may be provided at a place other than the window 16.
  • the first light emitting element 21 is assumed to be a top emission type light emitting element that mainly emits light in a direction perpendicular to the installation surface of the first light emitting element. You may use the side light emission type light emitting element which irradiates light in the direction of the installation surface of a light emitting element.
  • the first light emitting element 21 can be installed not on the side light shielding part 23 but on the upper light shielding part 24 as in a third embodiment described later.
  • a third embodiment of the lighting device according to the present invention will be described with reference to FIG.
  • an anti-lighting illumination device is assumed as in the first and second embodiments.
  • the first light emitting element 31 is provided not in the side light shielding portion 33 but in the upper light shielding portion 34 with respect to the lighting device 1A of the first embodiment.
  • FIG. 7 shows a cross section including the central axis ⁇ of the illumination device 1C in the present embodiment.
  • the direction of the central axis ⁇ is described as being the direction of gravity, but is not limited to this.
  • the illumination device 1 ⁇ / b> C includes a plurality of first light emitting elements 31, a main light in a first irradiation region including a lower portion of the central axis ⁇ , and a second light including a direction orthogonal to the central axis ⁇ .
  • It is an LED bulb-type illumination device configured to be capable of irradiating auxiliary light to an irradiation region, and includes a plug 3, an outer wall member 2, a drive circuit 4, and a light scattering portion 38 as a first optical path conversion member.
  • the configurations of the plug 3, the outer wall member 2, and the drive circuit 4 are the same as those in the first and second embodiments.
  • the setting of the first irradiation area and the second irradiation area is also the same as in the first embodiment.
  • the present embodiment includes eight first light emitting elements 31a to 31h, a printed circuit board 35 on which the first light emitting elements 31 are mounted, and a light shielding portion 32. ing.
  • the first light emitting elements 31a to 31h perform the irradiation operation in the first embodiment.
  • the light-shielding portion 32 has an inner peripheral surface facing the internal space in which the first light emitting element is accommodated formed of a cylindrical side surface, and the outer peripheral surface has a truncated cone shape.
  • a side light-shielding part 33 and an upper light-shielding part 34 composed of a top surface of a cylinder are provided.
  • the inside of the light shielding part 32 is a white reflecting surface.
  • a part or all of the surface may be a black surface or the like that does not generate reflected light and scattered light.
  • the central axis of the light shielding part 32 overlaps with the central axis ⁇ of the outer wall member 2, the upper light shielding part 34 is located on the drive circuit 4 side, and the opening of the light shielding part 32 is on the drive circuit 4 side.
  • the light-shielding part 32 is installed in contact with the opening of the outer wall member 2 so as to be located on the opposite side.
  • the printed circuit board 35 is a circular flat substrate, and is provided in the upper light-shielding part 34 in a cylindrical internal space surrounded by the light-shielding part 32.
  • the first light emitting element 31 is a surface-mounted LED that emits light having the spectrum shown in FIG. 2, and is arranged on the circular printed circuit board 35 in an annular manner at equal intervals.
  • each of the first light emitting elements 31 includes a lens 36 having a shape in which a central portion is recessed compared to an outer peripheral portion.
  • the first light emitting element 31 is installed on the printed circuit board 35 installed in the upper light shielding portion 34.
  • the intensity of light irradiated to the region near the outer region of the first irradiation region is increased. And unevenness of the intensity of the irradiated light in the first irradiation region can be reduced.
  • the direction of the light passing through the boundary between the first irradiation region and the external region in the light from the first light emitting element 31 is the outer boundary direction ⁇ , and the central axis ⁇ is the outer boundary direction.
  • ⁇ 1 is set to 75 degrees.
  • the light scattering member 38 that is a first optical path conversion member that scatters a part of the light emitted from the first light emitting element 31 in the direction of the second irradiation region.
  • a light scattering member 38 is integrally formed at the center of a window portion 37 made of a transparent member that covers the bottom surface of the inner space of the light shielding portion 32.
  • the light shielding part 32 is sealed by the window part 37 to protect the first light emitting element from rain or the like.
  • the window portion 37 is provided and the light scattering member 38 is integrally provided at the center of the window portion 37.
  • the present invention is not limited to this.
  • the window portion 37 is not necessarily provided, and the light scattering member 38 may be provided independently.
  • the window portion 37 of the present embodiment has a shape in which the central portion is curved outward, whereby the light scattering member 38 is located outside the internal space of the light shielding portion 32. 37 is formed integrally.
  • the central axis direction ⁇ of the first light emitting element 31 is parallel to the central axis ⁇ , but may be configured to have an inclination of 20 degrees or less. In this case, the angle adjustment of the light from the first light emitting element 31 can be assisted.
  • the central axis direction ⁇ may be configured to have an inclination of 10 degrees or less with respect to the central axis ⁇ .
  • a fourth embodiment of the lighting device according to the present invention will be described with reference to FIG.
  • an anti-lighting illumination device is assumed as in the first and second embodiments.
  • the first light emitting element 41 that does not include the lens 36 is used for the lighting device 1C of the third embodiment.
  • FIG. 8 shows a cross-sectional view including the central axis ⁇ of the illumination device 1D in the present embodiment.
  • the direction of the central axis ⁇ is described as being the direction of gravity, but is not limited to this.
  • the illumination device 1D includes a plurality of first light emitting elements 41, and is configured to be capable of irradiating main light in the first irradiation region and auxiliary light in the second irradiation region. It is a device, and includes a plug 3, an outer wall member 2, a drive circuit 4, and a light scattering portion 17 that is a first optical path conversion member.
  • the configurations of the plug 3, the outer wall member 2, and the drive circuit 4 are the same as those in the first and second embodiments.
  • the setting of the first irradiation area and the second irradiation area is also the same as in the first embodiment.
  • the first light emitting elements 41a to 41h perform the irradiation operation in the first embodiment.
  • the printed circuit board 45 of the present embodiment is a flat printed circuit board having a hole in the center, and the inside of the frustoconical inner space surrounded by the light shielding part 42 whose outer peripheral shape is a columnar shape.
  • the upper light shielding portion 44 is provided.
  • the first light emitting element 41 is a surface-mounted LED that emits light having the spectrum shown in FIG. 2, and is arranged on the circular printed circuit board 45 in an annular manner at equal intervals.
  • the light-shielding part 42 has a side light-shielding part 43 whose inside is a side surface of a frustum and whose outside is a cylindrical side surface, and an upper light-shielding part which is a top surface inside the frustum-shaped part. 44.
  • the cross-sectional shape of the internal space is a circle whose area increases as it goes above the central axis ⁇ , and the top surface having the largest area is the upper light shielding portion 44.
  • the inside of the light shielding part 42 is a white reflecting surface. In order to reduce unnecessary reflected light and scattered light, a part of the black surface or the like may be configured so as not to generate reflected light and scattered light.
  • the central axis of the light shielding part 42 overlaps with the central axis ⁇ of the outer wall member 2, the upper light shielding part 44 is located on the drive circuit 4 side, and the opening of the light shielding part 42 is on the drive circuit 4 side.
  • the light-shielding part 42 is installed in contact with the opening of the outer wall member 2 so as to be located on the opposite side.
  • the angle of the direction and the central axis ⁇ of the light of the first light emitting element 41 in after being reflected by the side light-shielding portion 43 has a theta 5, 85 ° angle of the theta 5 is 45 degrees or more
  • the settings are as follows.
  • the window portion 16 is provided and the light scattering member 17 is integrally provided at the center of the window portion 16.
  • the present invention is not limited to this.
  • the window 16 is not necessarily provided, and the light scattering member 17 may be provided independently.
  • the light from the first light emitting element 41 is reflected by the side light shielding portion 43 and the optical axis direction is adjusted, so that a member such as the lens 36 is not necessary.
  • a fifth embodiment of a lighting device according to the present invention will be described with reference to FIG.
  • an anti-lighting illumination device is assumed as in the first embodiment.
  • the lighting device 1A of the first embodiment is configured to include a second light emitting element that emits auxiliary light.
  • FIG. 9 for the sake of explanation, as in FIG. 1, the X axis is set in the direction of the central axis ⁇ of the lighting apparatus 1E, and the Y axis and the Z axis are set in directions orthogonal thereto.
  • FIG. 9A shows a cross-sectional view including the central axis ⁇ of the lighting device 1E in the present embodiment
  • FIG. 9B shows a bottom view of the lighting device 1E viewed from below the central axis ⁇ .
  • description of the light reflection member 59 which is a 1st optical path conversion member, and the window part 58 is abbreviate
  • the direction of the central axis ⁇ is described as being the direction of gravity, but is not limited to this.
  • the lighting device 1E includes a plurality of first light emitting elements 51, and is an LED light bulb type configured to be able to irradiate main light on the first irradiation region and auxiliary light on the second irradiation region. It is an illuminating device, comprising a plug 3, an outer wall member 2, and a drive circuit 4. The configurations of the plug 3, the outer wall member 2, and the drive circuit 4 are the same as those in the first embodiment. The setting of the first irradiation area and the second irradiation area is also the same as in the first embodiment.
  • the present embodiment includes eight first light emitting elements 51a to 51h, a printed circuit board 55 on which the first light emitting elements 51 are mounted, and a light shielding portion 52. ing.
  • the light shielding part 52 is sealed by the window part 58 that covers the bottom surface of the internal space of the light shielding part 52, and protects the first light emitting element from rain or the like.
  • the light-shielding part 52 includes a side light-shielding part 53 made of the side surface of the truncated cone and an upper light-shielding part 54 made of the top surface of the truncated cone.
  • the side light-shielding part 53 has a function of shielding the blinking light, which is the main light emitted from the first light emitting element 51, from being emitted from the lighting device 1E in a direction perpendicular to the central axis ⁇ .
  • a part of the light emitted from one second light emitting element 56 that irradiates the auxiliary light, the lens 57, and the second light emitting element 56 is second irradiated.
  • a light reflecting member 59 that is a first optical path changing member that reflects in the direction of the region is provided.
  • the light shielding part 52 is hermetically sealed by a window part 58 that covers the bottom surface of the internal space of the light shielding part 52, and protects the first light emitting element, the second light emitting element, and the like from rain or the like.
  • the window portion 58 is provided and the light reflecting member 59 is provided at the center of the window portion 58.
  • the present invention is not limited to this.
  • the window part 58 does not necessarily need to be provided, and the light reflecting member 59 may be provided outside the internal space, and may be provided at a place other than the window part 58.
  • the second light emitting element 56 is installed at the center of the upper light shielding portion 54 via the printed circuit board 55, and the light emitted from the second light emitting element 56 is nearly parallel to the light reflecting member 59.
  • a lens 57 serving as a beam is provided.
  • the window portion 58 of the present embodiment includes a side surface and a bottom surface of a cylinder, and the light reflecting member 59 is installed in a columnar internal space surrounded by the window portion 58 at the center of the bottom surface.
  • the light reflecting member 59 reflects light from the second light emitting element 56 so that the optical axis of the second light emitting element 56 is in the range of 85 to 90 degrees with respect to the central axis ⁇ .
  • the reflected light of the second light emitting element 56 is applied to the second irradiation region through the window 58 made of a transparent member.
  • the light emitting operation of the first light emitting element 51 will be described with reference to FIG.
  • the first light emitting element 51a and the first light emitting element 51e are in a bright state, and from time T2 to T3, the first light emitting element 51b and the first light emitting element 51b
  • the light emitting element 51f is in the bright state
  • the first light emitting element 51c and the first light emitting element 11g are in the bright state from time T3 to T4
  • the first light emitting element 51d and the first light emitting element 51h are in the bright state from time T4 to T5. It becomes.
  • the partial irradiation area appears to rotate clockwise on the first irradiation area.
  • the continuous light emitted from the second light emitting element 56 is reflected by the light reflecting member 59 which is an optical path changing member, and travels to the second irradiation region where a distant observer exists. Therefore, the person in the second irradiation region recognizes that the lighting device 1E is a light source that is continuously lit by the auxiliary light from the second light emitting element 56, and the blinking of the main light from the first light emitting element 51 Almost no discomfort.
  • the auxiliary light from the second light emitting element 56 can more reliably recognize a person in the second irradiation region as a continuous light source in the present embodiment.
  • the same hardware as the lighting device 1E used in the fifth embodiment is used, but the operation is completely different.
  • the irradiation operation of the first light-emitting element 51 and the second light-emitting element 56 will be described with reference to FIG. 10 which is a graph showing the time change of light emission.
  • the first light emitting elements 51a to 51h emit light synchronously in the period Tb in FIG. 10 and turn off synchronously in the period Td. This is an operation different from the case where any one of the first light emitting elements 51a to 51h always emits light at an arbitrary time in the fifth embodiment.
  • the second light emitting element 56 has the light emission intensity of the second light emitting element 56 so that the brightness of the entire light that directly or indirectly irradiates the second irradiation region is substantially constant. The light emission intensity is changed so as to be weak in the period Tb and strong in the period Td.
  • FIG. 10A shows the light emitting operation of the first light emitting element 51.
  • all of the plurality of first light emitting elements 51a to 51h perform the light emitting operation synchronized in time.
  • Tb is a period in which the plurality of first light emitting elements 51 are in the bright state
  • Td is a period in which the first light emitting element 51 is in the dark state
  • the blinking cycle is represented by Tb + Td.
  • FIG. 10B shows the light emission operation of the second light emitting element 56.
  • the maximum value of the luminance of the second light emitting element viewed from the person in the second irradiation area is stronger by offset than the luminance of the entire first light emitting element 51 when all the first light emitting elements 51 are simultaneously in the bright state. It has become. As shown in FIG. 10, when the first light emitting element 51 is in the bright state, the luminance of the second light emitting element 56 is set to offset, and when the first light emitting element 51 is in the dark state, the luminance of the second light emitting element 56 is set. To the maximum value. That is, the light emitting operation is performed so that the total luminance of the first light emitting element 51 and the luminance of the second light emitting element 56 viewed from the person in the second irradiation region is always the same.
  • the total luminance of the first light-emitting element 51 and the total luminance of the second light-emitting element 56 viewed from the human side is the same is described. It may vary within a range that can reduce human discomfort due to.
  • the person who is in the second irradiation region is irradiated directly with light emitted from the first light emitting element 51 and directly with the second light emitting element 56.
  • the light is irradiated with the same luminance throughout the light. For this reason, it looks almost continuous light to humans.
  • the blinking operations of the first light emitting elements 51a to 51h are synchronized, there is a total dark period in which all the first light emitting elements 51 are in a dark state. Therefore, in order for the illumination device 1E to appear to emit continuous light to a person who is far away, the light from the second light emitting element 56 needs to irradiate the second irradiation region where the person who is far away is present.
  • a seventh embodiment of a lighting device according to the present invention will be described with reference to FIG.
  • an anti-lighting illumination device is assumed as in the first embodiment.
  • the lighting devices 1A to 1E of the first to sixth embodiments are LED bulb-type lighting devices, whereas the lighting device 1F is a straight tube type LED lighting device. The case will be described.
  • the X axis is set in the direction of the central axis ⁇ passing through the center of the lighting device 1 ⁇ / b> F in the cross section perpendicular to the longitudinal direction of the lighting device 1 ⁇ / b> F, and in the direction perpendicular thereto.
  • Y axis and Z axis are set.
  • Fig.11 (a) has shown the cross section containing the X-axis and the Y-axis of the illuminating device 1F in this embodiment.
  • FIG.11 (b) has shown the cross section containing the X-axis and the Y-axis of the illuminating device 1F in this embodiment.
  • the direction of the central axis ⁇ is described as being the direction of gravity, but is not limited to this.
  • the illumination device 1F is a straight tube type LED illumination device that includes a plurality of first light emitting elements 61 and is configured to be able to irradiate light to the first irradiation region and the second irradiation region.
  • the plug 3, the drive circuit 4, and the light scattering portion 67 are provided.
  • the setting of the first irradiation area and the second irradiation area is the same as that in the first embodiment.
  • the present embodiment includes 48 first light emitting elements 61L1 to 61L24, 61R1 to 61R24, a printed circuit board 65 on which the first light emitting elements 61 are mounted, and a light shielding portion 62. Configured.
  • the light shielding portion 62 is one of the side surfaces of a quadrangular pyramid having a trapezoidal cross section, here, an upper light shielding composed of a surface in contact with the top bottom of the top surface. And a side light-shielding portion 63 comprising four surfaces of a quadrangular pyramid that is in contact with the upper light-shielding portion 64.
  • the inside of the light shielding part 62 is a mirror surface or a white reflecting surface. In order to reduce unnecessary reflected light and scattered light, a part or all of the surface may be a black surface or the like that does not generate reflected light and scattered light.
  • the height of the quadrangular pyramid is set so that the bottoms of the two top surfaces of the quadrangular pyramid are parallel to the Y axis so that the upper light shielding portion 64 is perpendicular to the X axis.
  • Each direction is set to be parallel to the Z axis.
  • the length (depth) of the outer wall member 2 in the Z-axis direction is 60 cm.
  • the light shielding portion 62 also functions as the outer wall member 2, and the plug 3 is provided on one of the top surfaces, and the drive circuit 4 is provided in the central portion of the upper light shielding portion 64. Note that there is a cover on the drive circuit 4, and the drive circuit 4 is not directly visible when in use.
  • the plug 3 is connected to a commercial AC power supply (AC 100 V to 230 V, 50 Hz or 60 Hz) and supplies power to the drive circuit 4.
  • the printed circuit board 65 is composed of a rectangular flat substrate, and as shown in FIG. 11A, is an internal space surrounded by a light-shielding portion 62 having a truncated pyramid shape, and is a side surface of the truncated pyramid. Among these, it is installed on two surfaces constituting the side light-shielding portion 63.
  • the first light emitting elements 61 are arranged in a matrix on the printed circuit board 65. Specifically, as shown in FIG. 11, the first light emitting elements 61L1 to 61L24 are arranged in a line along the Z direction on one surface, and the first light emitting elements 61R1 to 61R24 are arranged in the Z direction on the other surface. It is arranged in a line along. Further, in the present embodiment, each of the first light emitting elements 61L1 to 61L24 and 61R1 to 61R24 takes into account unevenness in the irradiation intensity of the first irradiation region, and the optical axis direction of each first light emitting element 61 is set to the Z axis. It is installed so that it may become diagonal to it.
  • the first light emitting element 61 is configured using a surface-mounted LED suitable for illumination that has good heat dissipation and requires high luminance. 0.42, 0.48).
  • the present embodiment includes a light scattering member 67 that is a first optical path conversion member that directs a part of the light emitted from the first light emitting element 61 toward the second irradiation region.
  • the light scattering member 67 has a substantially rectangular frustum-like shape surrounded by the center of the window 66 made of a substantially rectangular flat transparent member covering the bottom surface of the internal space surrounded by the light shielding portion 62 and the light shielding portion 62. It is installed outside the internal space.
  • the light shielding portion 62 is sealed by the window 66 to protect the first light emitting element from rain or the like.
  • the light scattering member 67 is a member formed of a curved surface having a convex cross section including the X-axis and Y-axis of the top surface.
  • a light reflecting member may be provided as the first optical path conversion member.
  • the window 66 is provided and the light scattering member 67 is provided at the center of the window 66.
  • the present invention is not limited to this.
  • the window portion 66 is not necessarily provided, and the light scattering member 67 may be provided outside the internal space surrounded by the light shielding portion 62, and may be provided at a place other than the window portion 66.
  • the position of the first light emitting element 61 in the bright state and the position of the first light emitting element 61 in the dark state among the plurality of first light emitting elements 61 are defined by the blinking circuit 4a of the drive circuit 4.
  • the first light / dark pattern and the second light / dark pattern which is an inverted pattern of the first light / dark pattern are alternately set in time.
  • a pattern in which the first light emitting elements 61R1 to 61R24 are in a bright state and the first light emitting elements 61L1 to 61L24 are in a dark state is considered as the first light / dark pattern. It is done.
  • the first light emitting elements 61R1, 61R3, among the first light emitting elements 61R1 to 61R24, the first light emitting elements 61R1, 61R3,.
  • the first light emitting elements 61L1 to 61L24 the first light emitting elements 61L2, 61L4,..., 61L24 whose subscripts after L are an even number are set to a bright state, and the other first light emitting elements 61 are set to a dark state. It is conceivable to use the pattern as the first light / dark pattern and the inverted pattern of the pattern as the second light / dark pattern.
  • the first light emitting elements 61R1, 61R3 are the first light emitting elements 61R1, 61R3,.
  • a pattern that makes the first light-emitting elements 61L1, 61L3,..., 61L23 whose subscripts are odd numbers in the bright state and the other first light-emitting elements 61 in the dark state is the first light-dark pattern It is conceivable to use an inverted pattern of the pattern as the second light / dark pattern.
  • the scattering member is always configured to emit auxiliary light, and a person in the second irradiation area can perceive the auxiliary light as continuous light. Even if the total dark period is not 0, if it is set shorter than the perceptible time of a person, the person can perceive it as continuous light.
  • a normal person can perceive as continuous light if the total dark period is 10 ms or less, and even a highly sensitive person can perceive it as continuous light if the total dark period is 5 ms or less.
  • a time lag of 5 ms or less may occur.
  • this embodiment demonstrated the case where the number of the 1st light emitting elements 61 was 48, it does not restrict to this.
  • the first light emitting elements 61 are arranged symmetrically on the two surfaces of the quadrangular pyramid as in the present embodiment, it is only necessary to have an even number of first light emitting elements 61.
  • any of the light and dark patterns can be applied, which is preferable.
  • a plurality of rows of first light emitting elements 61 may be provided on one side surface.
  • the plug 3 is installed in the vicinity of the flashing circuit 4a and the driving circuit 4b on the upper light shielding portion side.
  • the 1st light emitting element in the illuminating device 1E of the said 6th Embodiment is one LED module, and the 1st light emitting element and the 2nd light emitting element light-emit the light containing blue light. Will be described.
  • FIG. 16 for the sake of explanation, as in FIG. 1, the X axis is set in the direction of the central axis ⁇ of the lighting apparatus 1G, and the Y axis and the Z axis are set in directions orthogonal thereto.
  • FIG. 16A shows a cross-sectional view including the central axis ⁇ of the lighting device 1G in the present embodiment
  • FIG. 16B shows a bottom view of the lighting device 1G viewed from below the central axis ⁇ .
  • description of the light distribution lens 77, the light-scattering member 79 which is a 1st optical path conversion member, and the window part 78 is abbreviate
  • the direction of the central axis ⁇ is described as being the direction of gravity, but is not limited to this.
  • the illuminating device 1G includes a first light emitting element 71 that is one LED module, and is configured to be able to irradiate the main light L1 in the first irradiation region and the auxiliary light L2 in the second irradiation region.
  • the LED bulb-type lighting device is provided with a plug 3, an outer wall member 2, and a drive circuit 4.
  • the first light emitting element 71 has a plurality of semiconductor LED chips 71A mounted on a single substrate 71B, and the plurality of semiconductor LED chips 71A can blink simultaneously according to a driving voltage applied from the outside. .
  • the configurations of the plug 3, the outer wall member 2, and the drive circuit 4 are the same as those in the first embodiment.
  • the setting of the first irradiation area and the second irradiation area is also the same as in the first embodiment.
  • the present embodiment includes a first light emitting element 71, a light distribution lens 77 for spreading light, and a light blocking portion 72.
  • the light shielding part 72 is sealed by a window 78 positioned slightly below the virtual internal space surrounded by the light shielding part 72 to protect the first light emitting element 71 and the second light emitting element 76 from rain or the like.
  • the light distribution lens 77 is axisymmetric with respect to the axis ⁇ , the light distribution lens recess 77A is provided in the vicinity of the axis ⁇ , and the light emitted from the first light emitting element 71 and reaching the light distribution lens recess 77A. It is designed to reflect either totally or partially.
  • the light shielding part 72 includes a side light shielding part 73 formed of a side surface of a truncated cone and an upper light shielding part 74 formed of a top surface of the truncated cone.
  • the side light shielding unit 73 has a function of shielding the blinking light, which is the main light emitted from the first light emitting element 71, from being emitted from the lighting device 1G in a direction orthogonal to the central axis ⁇ .
  • the first light emitting element 71 and the second light emitting element 76 are white LEDs, and the spectrum thereof is a combination of the blue color emitted from the semiconductor LED chip and the yellow spectrum converted by the semiconductor LED chip. Since the window 78 is a filter that blocks blue light, the window 78 looks yellow, and cuts blue light out of light emitted from the first light emitting element 71 and the second light emitting element 76.
  • one second light emitting element 76 that irradiates the auxiliary light L2 and a part of the light emitted by the second light emitting element 76 in the second irradiation region.
  • a light scattering member 79 that is a first optical path conversion member that scatters in the direction is provided.
  • the window 78 is provided and the light scattering member 79 is provided at the center of the window 78.
  • the light scattering member 79 only needs to be provided outside the virtual internal space surrounded by the light shielding portion 72, and may be provided at a place other than the window portion 78.
  • the second light emitting element 76 is installed on the side light-shielding portion 73 via the printed circuit board 75, and the light emitted from the second light emitting element 76 is a nearly parallel beam directed toward the light scattering member 79.
  • a lens 76A is provided.
  • the window part 78 of this embodiment consists of a cylindrical side surface and a plane, and the light-scattering member 79 is installed in the center of the plane.
  • the light scattering member 79 scatters light from the second light emitting element 76.
  • the scattered light of the second light emitting element 76 is irradiated as the auxiliary light L2 to the second irradiation region through the window 78 formed of a yellow filter member.
  • the first light emitting element 71 emits light and extinguishes similarly to the first light emitting element 51 in the sixth embodiment. That is, light is emitted in synchronization in the period Tb in FIG. 10, and is extinguished in synchronization in the period Td.
  • the light emitted from the first light emitting element 71 is shielded by the light shielding portion 72
  • the light emitted from the first light emitting element 71 to the first irradiation area is slightly, but is not limited. 2 Irradiation area may be indirectly irradiated. In such a case, the blinking may be slightly perceived by a person in the second irradiation area. Therefore, in the present embodiment, the second light emitting element 76 has the light emission intensity of the second light emitting element 76 so that the brightness of the entire light that directly or indirectly irradiates the second irradiation region is as constant as possible. The light emission intensity is changed so as to be weak in the period Tb and strong in the period Td.
  • FIG. 10A can be interpreted as showing the light emitting operation of the first light emitting element 71 (particularly, a plurality of semiconductor LED chips 71A).
  • Tb is a period in which the first light emitting element 71 is in a bright state
  • Td is a period in which the first light emitting element 71 is in a dark state
  • the blinking cycle is represented by Tb + Td.
  • FIG. 10B can be interpreted as showing the light emitting operation of the second light emitting element 76.
  • the maximum value of the luminance of the second light emitting element viewed from the person in the second irradiation area is stronger by offset than the luminance of the entire first light emitting element 71 when all the first light emitting elements 71 are simultaneously in the bright state. It has become. As shown in FIG. 10, when the first light emitting element 71 is in the bright state, the luminance of the second light emitting element 76 is set to offset, and when the first light emitting element 71 is in the dark state, the luminance of the second light emitting element 76 is set. To the maximum value.
  • the light emission operation is performed so that the total luminance of the first light emitting element 71 and the luminance of the second light emitting element 76 viewed from the person in the second irradiation region are always the same.
  • the total luminance of the first light-emitting element 71 and the total luminance of the second light-emitting element 76 viewed from the human side is the same is described. It may vary within a range that can reduce human discomfort due to.
  • the person who is in the second irradiation region is directly irradiated with the light indirectly irradiated from the first light emitting element 71 and the second light emitting element 76.
  • the light is irradiated with substantially the same luminance as the whole light. For this reason, it looks almost continuous light to humans.
  • FIG. 17A is a cross-sectional view including the central axis ⁇ of the lighting device 1H in the present embodiment
  • FIG. 17B is a bottom view of the lighting device 1H viewed from below the central axis ⁇ .
  • the description of the light distribution lens 77 and the window portion 78 is omitted.
  • the lighting device 1H includes three second light emitting elements 86 for emitting auxiliary light L2, and the auxiliary light L2 is supplied from the second light emitting elements 86 to the second light emitting element 86.
  • Two irradiation areas are directly irradiated.
  • the auxiliary light L2 is irradiated from the second light emitting element 86 to the second irradiation region without converting the optical path of the auxiliary light L2 by using the first optical path conversion member.
  • the illuminating device 1H is provided with the 1st light emitting element 71 which is one LED module, main light L1 is provided to a 1st irradiation area
  • the LED bulb-type illumination device is configured to be capable of irradiating the auxiliary light L2 and includes a plug 3, an outer wall member 2, and a drive circuit 4.
  • the present embodiment includes a first light emitting element 71, a light distribution lens 77 for spreading light, and a light blocking portion 72.
  • the light shielding part 72 is hermetically sealed by a window part 78 that is located slightly below the virtual internal space that the light shielding part 72 covers and covers the internal space, and protects the first light emitting element 71 and the second light emitting element 86 from rain and the like.
  • the first light-emitting element 71 and the second light-emitting element 86 are commercially available white LEDs, and the spectrum thereof is a combination of the blue color emitted by the semiconductor LED chip and the yellow spectrum converted by the semiconductor LED chip, for example. Since the window 78 is a filter that blocks blue light, the window 78 looks yellow, and cuts blue light out of light emitted from the first light emitting element 71 and the second light emitting element 76.
  • the auxiliary light L2 since the auxiliary light L2 is directly applied to the second irradiation region, the three second light emitting elements 86 and the light from the second light emitting elements 86 are second irradiated.
  • a second light emitting element lens 86A facing the region and a substrate 85 that supports the second light emitting element are provided.
  • the second light emitting element 86 may be of a type having a lead frame, and the lead frame may be appropriately bent to support the second light emitting element.
  • the number of the second light emitting elements 86 is not limited to three, and is preferably 2 or more and 8 or less.
  • the first light path conversion member is unnecessary because the auxiliary light L2 is directly irradiated onto the second irradiation region.
  • a second phosphor that is excited by light emitted from the first light emitting element is used as the second light emitting element.
  • the “light-emitting element” refers to an element (component) having a light-emitting function, and thus is not limited to an element that emits light by being excited by power supply such as a light-emitting diode.
  • the phosphor that emits light when excited by the light is also included in the “light emitting element”.
  • FIG. 18 shows a lighting device 1J according to the tenth embodiment.
  • the X axis is set in the direction of the central axis ⁇ of the lighting device 1J
  • the Y axis and the Z axis are set in directions orthogonal thereto.
  • 18A is a cross-sectional view including the central axis ⁇ of the lighting device 1J according to this embodiment
  • FIG. 18B is a bottom view of the lighting device 1J viewed from below the central axis ⁇ .
  • the window 98 is not shown.
  • the direction of the central axis ⁇ is described as being the direction of gravity, but is not limited to this.
  • the illuminating device 1J is an LED bulb-type illuminating device that includes a plurality of first light emitting elements 91 and is configured to be able to irradiate main light L1 on the first irradiation region. 3, an outer wall member 2 and a drive circuit 4.
  • the configurations of the plug 3, the outer wall member 2, and the drive circuit 4 are the same as those in the first embodiment.
  • the first light emitting element 91 is a white LED, and its spectrum is a combination of the blue color emitted by the semiconductor LED chip and the yellow spectrum converted by the semiconductor LED chip.
  • the second light emitting element (second phosphor) 96 is excited by the light emission of the first light emitting element 91 to emit light. Since the window 98 is a filter that blocks blue light, it looks yellow and cuts blue light out of light emitted from the first light emitting element 91 and the second light emitting element (second phosphor) 96.
  • the present embodiment includes eight first light emitting elements 91a to 91h, a printed circuit board 55 on which the first light emitting elements 91 are mounted, and a light shielding portion 52. ing.
  • the light shielding part 52 is sealed by the window part 98 that covers the bottom surface of the internal space of the light shielding part 52, and protects the first light emitting element from rain or the like.
  • the second light emitting element (second phosphor) composed of a phosphor that emits light by receiving blue light among the light emitted from the first light emitting element 51.
  • 96 is disposed inside the window 98 (on the side close to the first light emitting element).
  • the second light emitting element (second phosphor) 96 is made of a material including a phosphor having a relatively long afterglow that is excited by blue light and emits visible light having a longer wavelength than the blue light.
  • a phosphor having two kinds of activation elements among which Gd 3 Sc 2 -x Ga 3 + x O 12 : Ce 3 + , Hf 3 +, etc., which are garnet phosphors, can be preferably used.
  • aluminate phosphors for example, SrAl 2 O 4 ; Eu, Dy, Ca 0.42 Sr 1.5 Al 2 SiO 7 : Ce 3+ , Tb 3+
  • silicate phosphors for example, Ba 2 MgSi 2) O 7 : Eu 2+ , Mn 2+
  • the decay time constant of the phosphor is about several hours.
  • Such a long afterglow phosphor emits light during that time even if the dark period of the first light emitting element is as long as 1000 ms, for example, and thus continues to emit the auxiliary light L2 in effect as a continuous light source.
  • a phosphor having a relatively long afterglow a phosphor having an attenuation time constant of three times or more of the dark period, for example, about 240 ms or more when the dark period is 80 ms is preferable.
  • the second light emitting element emits light when excited by light from the first light emitting element, and also emits light when excited by sunlight. Therefore, when using a phosphor having a decay time of, for example, 1 hour or longer, it is preferable to arrange the phosphor at a position where it is often irradiated with sunlight. Since solar rays include ultraviolet rays, ultraviolet-excited long afterglow phosphors such as SrAl 2 O 4 ; Eu, Dy can be suitably used. In addition, when using the ultraviolet-ray of sunlight as an excitation light source, it is preferable to arrange
  • the first light emitting element 91 emits light and extinguishes similarly to the first light emitting element 11 in the first embodiment. Therefore, the light emitting operation of the first light emitting element in this embodiment will be described with reference to FIG. As shown in FIG. 5, in the first light emitting element 91, the first light emitting element 91a and the first light emitting element 91e are in the bright state from time T1 to T2, and the first light emitting element 91b and the first light emitting element 91b are from time T2 to T3.
  • the light emitting element 91f is in the bright state
  • the first light emitting element 91c and the first light emitting element 11g are in the bright state from time T3 to T4
  • the first light emitting element 91d and the first light emitting element 91h are in the bright state from time T4 to T5. It becomes. With this configuration, the partial irradiation area appears to rotate clockwise on the first irradiation area.
  • first to sixth and tenth embodiments the case where the eight first light emitting elements are provided has been described, but the present invention is not limited to this.
  • first light emitting elements that are an integral multiple of the number of first light emitting elements that are simultaneously in a bright state.
  • FIG. 13 shows a case where twelve first light emitting elements 31 are provided.
  • a pair of first light emitting elements located opposite to each other across the central axis ⁇ is in a bright state, and the other first light emitting elements are in a dark state.
  • the present invention is not limited to this.
  • FIG. 14 shows an example of the temporal change of the light / dark pattern.
  • FIG. 14 shows a case where the illumination device 1 includes twelve first light emitting elements and is arranged as shown in FIG. ing.
  • FIG. 14A shows a case where twelve first light emitting elements are provided, and a pair of first light emitting elements located opposite to each other across the central axis ⁇ is in a bright state, and the other first light emitting elements are in a dark state.
  • the time change of the light / dark pattern to be turned is shown for the case of rotating the first light emitting element one by one.
  • FIG. 14B shows a light / dark pattern in which every third of the four first light emitting elements is in the bright state and the other first light emitting elements are in the dark state when twelve first light emitting elements are provided. This time change is shown for the case where the first light emitting element is rotated one by one. In addition, you may comprise so that it may rotate by m 1st light emitting elements (m is an integer of 2-6) when the number of the 1st light emitting elements is 12. When configured in this manner, the three first light emitting elements located at the vertices of the regular triangle are always in the bright state. For this reason, the nonuniformity of the light intensity in a scattering member can be reduced more.
  • FIG. 14C shows a light / dark pattern in which four first light emitting elements, which are located every three, are set to a bright state and other first light emitting elements are set to a dark state when twelve first light emitting elements are provided. This time change is shown for the case where the first light emitting element is rotated one by one. In addition, you may comprise so that it may rotate by m 1st light emitting elements (m is an integer of 2-6) when the number of the 1st light emitting elements is 12.
  • FIG. 14 (d) shows a case where twelve first light emitting elements are provided, in which two adjacent first light emitting elements are grouped, and a first group belonging to a pair of groups at positions facing each other across the central axis ⁇ .
  • the figure shows a case where the time change of the light / dark pattern in which one light emitting element is in a bright state and the other first light emitting elements are in a dark state is rotated by two first light emitting elements.
  • FIG. 14E shows a case where the temporal change of the light and dark pattern shown in FIG. 14D is rotated by one first light emitting element.
  • it may be a time change of a light / dark pattern in which at least one of the first light emitting elements is always in a bright state, and the first light emitting element to be in a bright state is randomly set.
  • the LED bulb-type lighting device 1 has been described with respect to the case where the window portion is formed of a flat transparent member and includes a light scattering member. It is not limited.
  • a light reflecting member may be provided in the center of the window portion whose center portion is curved outward, or in the internal space of the light shielding portion.
  • a light reflecting member may be provided in the center of the flat window portion and in the external space side of the light shielding portion.
  • the first light emitting element itself blinks.
  • the first light emitting element includes a mirror that reflects light, and the mirror is rotated.
  • irradiation with rotating light may be performed. In this case, even if the first light emitting element is not suitable for the blinking operation, the effect of the blinking operation can be obtained while continuously lighting, and the deterioration of the first light emitting element can be reduced.
  • the main light irradiated to the first irradiation region is the blinking light
  • the main light irradiated to the first irradiation region by the first light emitting element is used. May be continuous light with a color temperature of 4000 K to 6500 K
  • auxiliary light to the second irradiation region by the second light emitting element may be continuous light with a light scattering of 2000 K to 3500 K.
  • the main light irradiated to the first irradiation region by the first light emitting element is continuous red light
  • the auxiliary light to the second irradiation region by the second light emitting element is continuous light bulb color of 2000K to 3500K.
  • Light or continuous light of 3500K to 6500K that is white may be used.
  • Red light can be used to suppress flowering such as chrysanthemum, but if the light leaks to the surroundings, the entire surroundings become red, which may cause discomfort to the surrounding residents. Therefore, the influence on the surroundings can be reduced by directing white or light bulb-colored auxiliary light to the surroundings. That is, the influence on the surroundings of the main light can be reduced by using auxiliary light having a light quality (color, wavelength, color temperature, etc.) different from that of the main light, that is, the light spectrum.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Optics & Photonics (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)
  • Led Device Packages (AREA)
  • Circuit Arrangement For Electric Light Sources In General (AREA)
  • Arrangement Of Elements, Cooling, Sealing, Or The Like Of Lighting Devices (AREA)

Abstract

L'invention concerne un dispositif d'éclairage apte à réduire un impact sur la zone environnante. Un dispositif d'éclairage apte à projeter une lumière sur une première région de projection et une seconde région de projection qui diffère de la première région de projection, comprend : un premier élément d'émission de lumière (11) qui est apte à émettre une lumière clignotante qui éclaire la première région de projection ; une partie de blocage de lumière (12) qui bloque la lumière émise par le premier élément d'émission de lumière (11) qui est projetée vers une région autre que la première région de projection ; et un premier élément de conversion de chemin optique (17) qui utilise la lumière émise par le premier élément d'émission de lumière (11), et convertit le chemin optique de la lumière émise par le premier élément d'émission de lumière (11) d'une manière telle que la seconde région de projection est éclairée par la lumière perçue pour avoir un niveau d'intensité de luminosité/pâleur inférieur à celui de la lumière clignotante émise à partir du premier élément d'émission de lumière (11).
PCT/JP2012/075487 2011-10-14 2012-10-02 Dispositif d'éclairage WO2013054693A1 (fr)

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